The Schaeffler Group is already making a decisive contribution to “Mobility for Tomorrow” today with its high-precision components and systems in engine, transmission, and chassis applications, in addition to rolling and plain bearing solutions for a large number of industrial applications.

By delivering high-precision components and systems in engine, transmission, and chassis applications, as well as rolling and plain bearing solutions for a large number of industrial applications, the Schaeffler Group is shaping “Mobility for tomorrow” to a significant degree.

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Precision Components and Systems for Transmissions in Passenger Cars and Commercial Vehicles

Recent years have seen the development of several new types of transmissions that have already made it into volume production. Automated manual transmissions, double clutch transmissions and CVTs have joined the conventional “manual transmissions” and “automatic transmissions with torque converters”. With its innovative components and systems, Schaeffler Automotive is significantly advancing the development of all types of designs and concepts in pursuit of increased driving comfort and reduced fuel consumption.

Components and Systems for Transmissions in Passenger Cars

Transmission bearing supports

Bearing Supports for Transmissions and Rear Axle Drives

Schaeffler focuses on systems and offers solutions for the entire bearing package used in a transmission system – with efficient use of space, high load capacity and low friction. This also includes solutions for radial and axial bearing supports of transmission shafts and gears, as well as complete planetary gear sets. When devising solutions, we look beyond the individual bearing, as we understand and consider the entire system. Conventional tapered roller bearings are being replaced by tandem angular contact ball bearings with two different pitch circles that are designed to support pinions and differentials in the front and rear axle drives. Less friction, and therefore reduced heat build-up, results in significantly higher efficiency which in turn leads to improved fuel economy. This allows modern cars to lower exhaust emissions and consume less fuel, while extending the service life of the individual components.

Products:

Needle roller bearings

Ball bearings

Tapered roller bearings

Drawn cup cylindrical roller bearings with open ends

Planetary gear sets

Angular contact ball bearings

Tandem angular contact ball bearings

Lightweight Differential

Weight reduction and more space: More compact, lighter, quieter, more efficient and even higher performance – these are the attributes of the innovative lightweight differential. The completely new architecture of this component allows the installation space to be reduced by 70 %. The lightweight differential has spur gears arranged as a planetary gear set in one plane, which results in 30 % lower weight compared with the conventional design. The lightweight differential is also a key component for innovative solutions in electric mobility, such as compact electric axles for hybrid vehicles and electric vehicles.

Gearshift and synchronization components deliver smooth shifts. We work closely with our customers as an engineering partner, starting with the initial stages of system development. Schaeffler’s system expertise is required here.

Synchronization components and synchronization systems are some of the essential components in a vehicle transmission and determine the comfort of manual transmissions, automatic transmissions, and double clutch transmissions. Synchronization systems will also be needed in future applications of hybrid transmissions, some with new functions. The market-oriented expansion of the portfolio to include synchronization systems means that Schaeffler is in an excellent position here. With the Eco System and Short System, the portfolio portfolio now comprises tried-and-tested components with standardized design as well as new solutions for optimizing the design space without sacrificing performance.

Products:

Clutch

Clutch disks

Clutch release systems / clutch release bearings

Peak torque limiter

Clutch-servo assistance

Linings

Gearshift system

Gearshift units / gearshift domes

Centrifugal pendulum-type absorber for clutches

Drawn cup needle roller bearings with open ends for linear and rotary motion

Shift detent

Selector sleeve

Synchro intermediate ring

Solutions for Double Clutch and Automated Transmissions

Automated solutions come in twos: We are a vital technology partner for the automotive industry in the development of new transmission designs. Recent innovations include automated manual transmissions and double clutch transmissions that offer comfortable operation and dynamic performance while reducing fuel consumption. A concept used in hybrid drives is the hybridized double clutch transmission. By integrating an electric motor, all the hybrid features – such as the start-stop function, regenerative braking and the ability to downsize the internal combustion engine through a booster function – are available without adding extra components.

Products:

Solutions for automated manual transmissions

Solutions for double clutch transmissions (dry and wet)

Solutions for hybridized double clutch transmissions

Dry double clutch

CVT transmission

Solutions for Automatic Transmissions

Innovative technologies that are customized to suit regional requirements: One of Schaeffler's recipes for success is having a product range that is also tailored to the requirements and demands of individual regions.

Enhanced comfort through automatic transmissions: In addition to supplying the complete set of bearings for shafts and gears as well as planetary gear sets, Schaeffler also offers components for automatic transmissions, especially torque converters and torque converter lockup clutches. By combining hydrodynamic converters and electric motors, Schaeffler is offering a key technology which should help ensure further growth of hybrid drives on the North American market.

Components such as pulley sets, multi-link chains and hydraulic components for continuously variable transmissions (CVT): The CVT is a very convenient solution for high-density traffic with widely varying driving speeds. The increasing worldwide requirements with regard to emissions and fuel consumption also make a very strong case for the use of CVTs: The continuous adjustment of the gear ratio without interrupting the tractive force means that the engine can always be operated in the section of the data map that is most favorable in terms of fuel consumption. The fuel consumption figures that this produces are on the same level as those of manual transmissions operated in the ideal manner. Hybrid concepts can also be optimally combined with CVT components.

Products:

Pulley sets for CVT

Chain for CVT

Torque converter

Centrifugal pendulum-type absorber for torque converter

Torque converter lockup clutches

Torsion Dampers

Schaeffler has extensive technical expertise in the field of dampers in the drive train. Groundbreaking developments such as the dual mass flywheel and torsion dampers integrated into clutch disks help to ensure driving comfort for today’s drivers.

Schaeffler was the first manufacturer in Europe to successfully develop a dual mass flywheel (DMF) for high-volume production. It is most certainly the best method of damping torsional vibrations in the drive train. The innovative DMF with centrifugal pendulum-type absorber is another key component for improved fuel economy and lower exhaust emissions, and it enables even higher driving comfort at the same time. Schaeffler has transferred the operating principle of the centrifugal pendulum-type absorber to other drive train solutions, for example, it is used in the torsion damper of torque converter lockup clutches.

Today, there are also components available that can dampen vibrations in the engine, such as dampers for crankshafts and balancer shafts.

Products:

Dual mass flywheel

Centrifugal pendulum-type absorber for DMFs and torque converters

Balancer shaft damper

Crankshaft damper

Dual mass flywheel

COMMERCIAL VEHICLES

Components and Systems for Transmissions in Commercial Vehicles

Tapered roller bearing with pulse ring

Main Bearings

Optimized friction and durable: The special design of our tapered roller bearing without an outer ring is matched to special requirements and space conditions. Designed for optimized friction, this tapered roller bearing is characterized by excellent durability. The integrated additional function offers the customer high performance density, long service life and reliability with low-friction running. In order to achieve this performance capability, our development department matches the main bearings to each other for all operating points.

Products:

Ball bearings

Cylindrical roller bearings

Drawn cup bearings

Tapered roller bearings

Direct bearing support

Double clutch transmissions

Needle Roller Bearings

Perfect for extreme conditions: For extreme requirements, our freewheel bearings are the ﬁrst choice. Irrespective of the individual requirements or the dominant factors such as temperature, load or speed, customers will always ﬁnd the perfect, lasting solution at Schaefﬂer.

Products:

Axial needle roller bearings

Drawn cup needle roller bearings with open ends

Needle roller and cage assemblies

Full complement needle roller bearings

Spacer sleeves

Inner rings

Planetary gear sets

Needle roller and cage assembly

Clutch release bearing

Clutch Release Systems

Robust design and perfect sealing: The pilot bearing supports the transmission input shaft in the ﬂywheel. This requires a long service life, which Schaefﬂer achieves by means of optimum sealing. This prevents clutch wear dust entering the bearing. The large grease reservoir guarantees a long running life, while the design is convincing through its insensitivity to axial motions.

Products:

Synchro ring

Detents in gearshift systems

Selector sleeves

ARRES

Clutch release systems / clutch release bearings

Gearshift Systems

Wear free and high precision: Our solutions give optimum gearshift feel and low-friction operation for all movable parts in the gearshift system. Bearings for linear and rotary motion enable a precise, defined gearshift. We also offer precisely fitting detents for all space conditions and requirements. Due to their low friction, they are particularly resistant to wear.

Products:

Detents

RLF rotary-linear guidance systems

Other gearshift components

Detent

Travel adjusted clutch (TAC)

Clutches

Optimum gearshift: At the interface between the engine and transmission, clutch systems give a rapid, secure and deﬁned gearshift. Clutches with self-adjusting wear compensation, torsion dampers optimally matched to the drive train and friction linings with low wear and high picking resistance combine comfort and robustness for applications in all torque classes. For the development of new double clutch transmissions, we are a strong partner in the commercial vehicle industry.

Torsional Vibration Dampers

Smooth running in the drive train: The centrifugal pendulum-type absorber on the ﬂywheel smooths the engine and thus enables fuel savings by means of downsizing combined with a reduction in noise emissions from the vehicle. Wide angle dampers give an additional increase in torsional vibration insulation and service life in all forward-looking concepts for truck transmissions. Vibration-damping components are now also available for the belt drive on the engine.

Products:

Centrifugal pendulum-type absorber on flywheel

Arc spring dampers

Wide angle dampers

Dampers for front end systems

Torsional vibration damper

Torque converter

Hydraulic Torque Converters

Perfect drive dynamics, low consumption: The new generation of converters with a mass-optimized sheet steel construction developed by Schaeffler for HCV automatic transmissions offers maximum efficiency in launch and gearshift operations. In combination with the integrated damper technology as well as compact, high performance multi-disk lockup clutches, they provide both excellent driving dynamics and a significant reduction in consumption.

Products:

Torque converters

Lockup clutches

Converter dampers

Components for Auxiliary Drives

Ready-to-ﬁt and easy to ﬁt: A hydraulic pump is driven by means of the internal teeth on the bearing unit. The unit shown can transmit torques of more than 1000 Nm. Its modular concept aids assembly at the customer’s premises. The internal oil ﬂow is controlled by means of radial holes, the seal and the bafﬂe plate, which can all be designed to individual requirements.